unsuccessful

不成功の,失敗の;失敗する

unsuccessful の類語

abortive, out, down-and-out, failed, disappointed, ruined, useless, defeated, done for, attempted, empty-handed, stillborn, unfortunate, sunk, ineffective, fruitless, failing, ineffectual, lame, vain, unrewarded, futile, unfruitful, discomfited, unproductive, bootless, manque, unprofitable, frustrated, worthless, sterile, foiled, unavailing, inefficacious, beaten, cursed, unlucky, hapless, balked, luckless

unsuccessful の反意語

successful, fruitful, useful

例文

• The attempts were for the most part unsuccessful.
  試みはだいたいにおいて失敗だった。
• He commented on his unsuccessful business negotiation.
  彼は不成功に終わった商談について意見を述べた。
• If I don't come back, the venture will probably be unsuccessful.
  もし私が戻らなければ、その事業は成功しないだろう。

unsuccessful の言い換えを探すには

unsuccessful（不成功の）の類語・言い換え（パラフレーズ）を、日本語訳つきで関連度順に並べています。英作文の語彙を増やしたいとき、長文読解で本文と選択肢の言い換えを見抜きたいときに使えます。